18133812303 has 4 divisors (see below), whose sum is σ = 24178416408. Its totient is φ = 12089208200.

The previous prime is 18133812299. The next prime is 18133812311. The reversal of 18133812303 is 30321833181.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18133812303 - 2² = 18133812299 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18133812313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3022302048 + ... + 3022302053.

It is an arithmetic number, because the mean of its divisors is an integer number (6044604102).

Almost surely, 2^18133812303 is an apocalyptic number.

18133812303 is a deficient number, since it is larger than the sum of its proper divisors (6044604105).

18133812303 is an equidigital number, since it uses as much as digits as its factorization.

18133812303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6044604104.

The product of its (nonzero) digits is 10368, while the sum is 33.

The spelling of 18133812303 in words is "eighteen billion, one hundred thirty-three million, eight hundred twelve thousand, three hundred three".